Re: '92 580 XP dies when tilted bow to stern
on the trailer the rpm's are twice what they are in the water due to no load on the pump.so you are not duplicating the situation with the trailer. also there is no back preasure on the engine out of the water, but all that said it still would seem like you have a short in an electrical system, seadoo has a real problem with fuel delivery and fuel hoses going bad, plus carb problems, will it stall out just idleing or only when you give it gas, I always do the following with sea doo, first I do the carb and fuel pump, go through the thing and replace the internal filter and diaphraghm, plus the pump parts they rebuild kit has everything you need, then remove the factory fuel lines and replace them with vinyl tubing, that can be purchased at home depo for 10 cents a foot, on all the suction side fuel lines I use stainless clamps NO cable ties//// and I place a larger piece of tubing over the hose where the clamp goes so it seals really tight to avoid air getting pulled in the lines. I hook up to the reserve pickup tube in the tank and totally bypass the fuel switch as those are notorious for going bad, leaking air or just clogging up. some contraversial advice,, in the fuel pump do not mess with the clear check valves unless they are bad you need to know how to change those correctly or you will mess them up, also do not mess with the needle spring that is in the carb unless you know how to do pop off preasures in most cases leaving it how it came from the factory will work fine. once you have cleaned the carb and changed the fuel lines and replaced the internal carb parts you should notice a big improvement in how the engine runs and you should add a inline fuel filter just after the factory water trap filter, if you do this you will not be having problems with fuel delivery and you will be able to see the fuel going through the lines, when you remove the fuel lines you will notice a green slime where the lines are hooked to the carb, the fuel lines react with fuel addatives in todays fuel placed there as injector cleaner for automobile use. this slime cloggs up the selector switch and the internal filter in the carb, vinyl tubing will not do this and is quite inexpensive, this entire process should cost around 50 or 60 dollars and will avoid a lot of ruined jet ski outings, something you are experiencing now, nothing worse than going out for some fun and standing on the beach trying to decide what is wrong with the ski. I would also rule out exhaust obstructions by removing the system hoses and muffler to see if something is creating back preasuer but I really doubt this is the issue.
